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Friday, July 19, 2019

A coil having 100 turns and the area 0.2 m^-2 is placed normally in a magnetic field. the magnetic field changes from 0.20 Wbm^-2 to 0.60 Wbm^-2 at a uniform rate over a period of 0.01 s .  calculate the induced emf in the coil.
A circular coil of radius 8cm and 20 turns rotates about its vertical diameter with the angular speed of 50 s^-1 in a uniform horizontal magnetic field of magnitude 3 * 10^-2 T . find the maximum and average value of the emf induced in the coil.
Kamla paddles a stationary bicycle . the paddles of the bicycle are attached to a 100 turn coil of area 0.10 m^2 .  The coil rotates at half a revolution per second and it is placed in a uniform magnetic field of 0.01 T perpendicular to the axis of rotation of the coil. What is the maximum voltage generated in the coil?
Derive the expression for (1) induced emf , (2) induced current  , when a conductor of length L is moved with a uniform velocity v , normal to a uniform magnetic field B .  assume the resistance of the conductor to be R.
In a 100  turn coil a magnetic flux of 8 * 10^-4 Wb is linked when a current of 2A is sent. what is the self inductance of the coil?

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A coil having 100 turns and the area 0.2 m^-2 is placed normally in a magnetic field. the magnetic field changes from 0.20 Wbm^-2 to 0.60 ...